2002 Mercedes S430 dash says that my L & R turn signal lamps need to be replaced but they work fine; I think the sensors are bad. Is that difficult to repair and, if not, how do I do it?Adding details will get you a faster solution from experts
Are you sure ALL lights are working? If one or both rear signals are out, the system is capable of powering a different bulb (such as a brake light or marker light). There aren't really "sensors" that detect a bulb outage. Each bulb is power separately by the Signal Acquisition Module, which sends power through the bulb, and then to ground. If a bulb is burnt, there will be no current flowing to ground. This is how it detects a bulb outage. Your best bet would be to take the bulbs out and inspect all of them.
Hope this helps!
The bulbs can be working but weak. The activity module might be sensning the power at the limit. You can have bulbs that will go soon or even dirty or loose sockets or conneccftors for the bulbs.If the bulb is lit then before you go buy a new one just take the bulb out and put it back in a couple of times.Usually this is all it takes to make good electrical contact with the bulbs. Usually the bulbs will wear down its contacts from vibration over time and won't be ablle to light. The filiment actually is the last thing to go unlike house light bulbs. Just remeber to check your manual for the correct bulb if you replace and if one goes then expect some of the others to follow.
SOURCE: Fuse box diagram
there are 3 fuse boxes called S.A.M.s and m.b. doesn,t want people changiong fuses. on the driver's side of the dashboard there is aplastic cover. if you open the door wide you will see it take a flathead screwdriver and pry it off. the diagram is located in the fuse box. look carefully and you will se it folded into a square on one of the sides of the fuse box. just replace the fuse with the right rating
SOURCE: Instruments lamps don't turn on in Mercedes 300E 1992
First
Make sure your dash "dimmer" is not turned all the way done, its a small rod thats twists clockwise to increase dash illumination, counter clockwise to decrease...
Next..the bulbs in the back of the gauge cluster might be burned out , if they are the original bulbs, thats probably the case...
SOURCE: 2002 s430 mercedes benz alarm keeps going off
change the batteries in the car alarm remote if you can.
SOURCE: On a 1995 S500 Mercedes , ASR light keeps coming on
yes they can but unlikely-more likely a bad over voltage relay(powers up idle speed computer) or wire harness-your vehicle is probably a hfm type fuel injection they changed from lh that year. find out if it is lh check the fuses in the base module located in the passenger side of the engine compartment under a cover held in by 4mm allen head bolts-alot of times these control units have intermittent contact with there connectors. asr stands for acceleration slip regulation-both isc and asr communicate via can system to monitor throttle position- ea isc cc-idle speed cruise control and electronic actuater(throttle)-hopefully i have helped
SOURCE: S430 turn signal relay location?
It is the combination switch on the end of the turn signal stalk see diagram for E-Class same switch
it is S4 in diagram
1,618 views
Usually answered in minutes!
Thanks Jeff; I'll do a more thorough inspection. Very helpful information!
Thanks Dave; I went through that exercise yesterday but the problem still persists. It seems to happen after the car has been sitting in the sun; I wonder if heat is somehow a factor? I'll try replacing the bulbs today and see if that does the trick.
Replaced the bulbs today and it seems to have solved the problem; thanks again for the input!
×